Device for operating sliding doors.



A. KRAUSE.

DEVICE FOR OPERATING SLIDING DOORS.

APPLIUATION FILED MAR. 3, 1909. 1 @3,1%8o

Patented. July 9, 1912.

COLUM 1A PLANDGR, H o

pairs rim? DEVICE FOR OPERATING SLIDING DOORS.

Specification of Letters Patent.

Application filed March 3, 1909.

Patented July 9, 1912. Serial No. 481,140.

To all whom it may concern:

Be it known that I, AUGUST KRAUsn, of Jamaica Plain, in the county of Sufiolk and State of Massachusetts, have invented new and useful Improvements in Devices for Operating Sliding Doors, of which the following is a specification, reference being had to the accompanying drawings, forming part thereof.

This invention has reference to improvements in devices for operating center opening sliding doors.

One object of the invention is to so construct an operating device of this nature that, of a pair of doors mounted to slide in opposite directions one of said doors may be automatically operated by the movement of the other of said doors.

Another object of the invention is to so construct a pair of sliding doors that upon the sliding of one of said doors the other door is caused to slide in the opposite direction and said connection may be engaged to prevent the movement of the doors.

The invention consists in such peculiar features of construction and combination of parts as shall hereinafter be more fully described and pointed out in the claims.

Figure 1, represents a view of portions of an elevator wall or similar structure show ing the improved sliding door operating device and lock applied to center opening sliding doors which are shown in closed position, portions of the sliding doors on the next higher floor being also shown. Fig. 2, represents a similar view of parts of the same, the doors being shown in the open position.

Similar numbers of reference designate corresponding parts in both figures.

As shown in the drawing a represents a wall having an opening I) and furnished with the parallel guides 0 and d between which are slidable the doors 6 and f. On the upper portion of the door e is secured the plate 5 which preferably extends upward and is furnished with the pivot 6 on which one end of the link 7 is pivoted, the other end of said link 7 being pivotally connected with the upper end of the bent lever 8 which is mounted to swing on the pivot 9 secured in the guide 0, or similar fixed portion, and at its lower end 10 has the slot 11 free to slide and swing with respect to stud 12 secured to the door f.

The door f has the handle 13 and is'preferably supplied with the latch 14 pivotally mounted on the said door and adapted to intercept the end 10 of the lever 8, when the doors 6 and f are in the closed position, to prevent the endwise movement of said lever in one direction whereby said lever 9 is locked against movement. The operation of latch 14 is facilitated and said latch is preferably sustained in the locking position by the rod 15 connected with one end of said latch and slidable in guide eyes 16 and 17, mounted on the door f, and having the thumb piece 18.

In operating this improved sliding door the thumb piece 18 is first pressed down to shift rod 15 and thus effect the swinging of latch 14 to the position shown in dotted lines in Fig. 1. Door f is now moved toward the right and, in such movement, stud 12 acts on the edges of slot 11 to eifect the swinging of lever 8, the slotted end 10 thereof being free to slide on said stud 12. Thus the upper end of lever 8 is caused to swing to the left and acting through the link 7 and plate 5 effects the sliding of door 6 in the same direction therefore said doors 6 and f slide apart to present a center opening as shown in Fig. 2 of the drawings. The closing movement is of course the reverse of the opening movement and in such movement the end 10 of lever 8 finally swings into line with latch 14 and is held by said latch against endwise opening movement.

Having thus described my invention I claim as new and desire to secure by Letters Patent.

1. The combination wit-h a pair of sliding doors, a lever pivotally mounted on a fixed pivot and having a slotted arm, a stud on one of said doors and engaged in said slot, and a link pivot-ally connected with said lever and the other of said doors, of a latch mounted on the first mentioned door and adapted to engage the end of said slotted arm.

2. The combination with a pair of sliding ally mounted on the first mounted door in doors, a lever pivotally mounted on a fixed position to swing into engagement with said pivot, a stud on one of the doors engaging lever, and means for moving said latch. said lever and with respect to which said AUGUST KRAUSE.

5 lever is free to slide and swing, and a link Witnesses:

pivotally connected with said lever and with HENRY J. MILLER, the second of said doors, of a latch pivot- M. M. HARRINGTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C. 

